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1. A concave shaving mirror has a radius of curvature of 37.8 cm. In the mirror, the image of a pimple on your face is magnified +6 times what it actually is on your cheek. How far is the mirror from your face? Give your answer in the form "ab.c cm".
Oppositely charged parallel plates are separated by 4.52 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field between the plates?
A cubic centimeter in a typical cumulus cloud contains 50 to 500 water drops, which have a typical radius of 10 µm. How much mass does the water in the cloud have
An RLC circuit is used to tune a radio to an FM radio station broadcasting at 35.9 MHz. What inductance should be present in the circuit
The world's largest refracting telescope is operated at the Yerkes Observatory in Wisconsin. It has an objective of diameter of 1.02 m. What is the minimum separation of two objects on the ground
A horizontal turntable is made from a uniform solid disk and is initially rotating with angular velocity of 7.5 rad/s about a fixed vertical axis through its center. What is the mass of the turntable
A satellite with a mass of 750 kg is in orbit around the earth. It is initially located at the altitude (measured from the earth's surface) of 2.12 x 106 m. It is then moved into a new orbit, with an altitude of 4.25 x 10^6 m (again, measured from..
We have a container of compressed air. Assume that air is diatomic ideal gas. The volume of the container is 1.35 liters. Find the final volume of the gas
A 75 kg parachutist descends through a vertical height of 310 m with constant speed. Find the increase in entropy produced by the parachutist, assuming the air temperature is 21°C.
A step-down transformer has a turns ratio of 1:10, and its primary is connected across the terminals of a standard 120-V wall socket. What power P is dissipated in the resistor
Consider a tungsten filament in a light bulb. After the bulb has been on for an hour, how has the resistance in filament changed (if at all).
Points A and B have electric potentials of 243 V and 129 V, respectively. When an electron released from rest at point A arrives at point C its kinetic energy is KA. When the electron is released from rest at point B, however, its kinetic energy when..
A concave shaving mirror has a radius of curvature of 40.1 cm. It is positioned so that the (upright) image of a man's face is 2.7 times the size of his face. How far is the mirror from the man's face?
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